Flash Flood Warning 7, NWS Grand Rapids, MI

172 
WGUS73 KGRR 232220
FFSGRR

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
620 PM EDT FRI JUL 23 2010

MIC015-025-045-065-075-077-240630-
/O.CON.KGRR.FF.W.0007.000000T0000Z-100724T0630Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
INGHAM MI-EATON MI-BARRY MI-JACKSON MI-KALAMAZOO MI-CALHOUN MI-
620 PM EDT FRI JUL 23 2010

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 230 AM EDT SATURDAY
FOR CALHOUN...EAST CENTRAL KALAMAZOO...JACKSON...EXTREME SOUTHEASTERN
BARRY...SOUTHERN EATON AND SOUTHERN INGHAM COUNTIES...

AT 605 PM EDT...THUNDERSTORMS PRODUCING FLASH FLOODING WAS REPORTED. 
THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM NEAR BATTLE 
CREEK TO JACKSON..MOVING EAST AT 30 MPH.  THESE STORMS WILL REPEAT 
OVER THE SAME AREA FOR UP TO 2 HOURS.  

NWS EMPLOYEES REPORTED THAT MANY INTERSECTIONS IN BATTLE CREEK WERE 
FLOODED. AROUND 2 INCHES OF RAIN FELL ON THE SOUTHWEST SIDE OF 
BATTLE CREEK BETWEEN 500 PM AND 600 PM.

ADDITIONAL STORMS WERE DEVELOPING SEVERAL MILES SOUTHWEST OF BATTLE 
CREEK.  LOCAL RAINFALL AMOUNTS IN THE WARNING AREA IN EXCESS OF 3 
INCHES COULD OCCUR.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
MARSHALL...STOCKBRIDGE...MARENGO...TRIST...STANLEY CORNERS...
WATERLOO...ALBION...FRANCISCO...GRASS LAKE...ECKFORD...CONDIT...
CONCORD...CLARENDON...ACKERSON LAKE...NAPOLEON ARPT...SOUTH
JACKSON...NORVELL...LIBERTY AND BROOKLYN.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES. ADDITIONALLY...COUNTRY
ROADS AND FARMLANDS ALONG THE BANKS OF CREEKS...STREAMS AND OTHER LOW
LYING AREAS ARE SUBJECT TO FLOODING.

&&

LAT...LON 4207 8461 4224 8547 4237 8550 4255 8458
      4258 8414 4208 8413 4207 8432

$$

MJS

090 
WGUS73 KGRR 240055
FFSGRR

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
855 PM EDT FRI JUL 23 2010

MIC015-045-065-240059-
/O.CAN.KGRR.FF.W.0007.000000T0000Z-100724T0630Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
INGHAM MI-EATON MI-BARRY MI-
855 PM EDT FRI JUL 23 2010

...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR EXTREME
SOUTHEASTERN BARRY...SOUTHERN EATON AND SOUTHERN INGHAM COUNTIES...

STAY TUNED FOR THE LATEST WEATHER INFORMATION.

LAT...LON 4207 8461 4224 8547 4237 8550 4237 8548
      4240 8482 4242 8414 4208 8413 4207 8432

$$

MIC025-075-077-240630-
/O.CON.KGRR.FF.W.0007.000000T0000Z-100724T0630Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
JACKSON MI-KALAMAZOO MI-CALHOUN MI-
855 PM EDT FRI JUL 23 2010

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 230 AM EDT FOR
CALHOUN...EAST CENTRAL KALAMAZOO AND JACKSON COUNTIES...

AT 845 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
THAT THE WIDESPREAD HEAVIEST RAINFALL HAD SHIFTED TO THE SOUTH OF 
THE WARNING AREA. HOWEVER RUNOFF CONTINUES FROM EARLIER HEAVY 
RAINFALL OF OVER TWO INCHES... AND UP TO ANOTHER HALF INCH OF RAIN 
IS STILL POSSIBLE THIS EVENING. 

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO YORKVILLE...
HOWLANDSBURG...BERRYVILLE...PLEASANT LAKE...WATERLOO...MINARD MILL...
TRIST...SPRINGPORT...ST MARYS LAKE...LEVEL PARK...PENNFIELD...FORT
CUSTER...RICE CREEK AND DUCK LAKE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES. ADDITIONALLY...COUNTRY
ROADS AND FARMLANDS ALONG THE BANKS OF CREEKS...STREAMS AND OTHER LOW
LYING AREAS ARE SUBJECT TO FLOODING.

&&

LAT...LON 4207 8461 4224 8547 4237 8550 4237 8548
      4240 8482 4242 8414 4208 8413 4207 8432

$$

MEADE

045 
WGUS73 KGRR 240240
FFSGRR

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
1040 PM EDT FRI JUL 23 2010

MIC025-075-077-240244-
/O.CAN.KGRR.FF.W.0007.000000T0000Z-100724T0630Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
JACKSON MI-KALAMAZOO MI-CALHOUN MI-
1040 PM EDT FRI JUL 23 2010

...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR CALHOUN...EAST
CENTRAL KALAMAZOO AND JACKSON COUNTIES...

TORRENTIAL RAINFALL HAS ENDED AND THE FLASH FLOOD THREAT NO LONGER 
EXISTS...BUT PONDING OF WATER ON ROADWAYS MAY CONTINUE AT A FEW 
LOCATIONS AS FLOOD WATERS RECEDE. AT 1020 PM EDT... CENTRAL DISPATCH 
INDICATED THAT FLOODING OF INTERSTATE 94 NEAR CLEAR LAKE ROAD WAS 
STILL PERSISTING. 

REMAIN CAUTIOUS WHEN DRIVING IN LOW LYING AREAS...AND REPORT ANY 
FLOODED ROADWAYS TO THE NEAREST LAW ENFORCEMENT AGENCY. THEY WILL 
RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE.

MOTORISTS SHOULD STILL USE EXTREME CAUTION...AND NEVER DRIVE THROUGH
AREAS WHERE WATER COVERS THE ROAD.

STAY TUNED FOR THE LATEST WEATHER INFORMATION.

LAT...LON 4207 8461 4224 8547 4237 8550 4237 8548
      4240 8482 4242 8414 4208 8413 4207 8432

$$

MEADE

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
400 PM EDT FRI JUL 23 2010

LATEST UPDATE...SYNOPSIS SHORT TERM MARINE HYDROLOGY...

.SYNOPSIS...(400 PM EDT FRI JUL 23 2010)
A COLD FRONT WILL SWING THROUGH LOWER MICHIGAN SATURDAY.  AHEAD OF
THIS FEATURE WILL BE A WARM AND HUMID AIRMASS WITH SOME
THUNDERSTORMS.  SEVERE WEATHER AND HEAVY RAINFALL ARE POSSIBLE.  A
DRIER AIRMASS ARRIVES FOR SUNDAY.

&&

.SHORT TERM...(400 PM EDT FRI JUL 23 2010)
(THIS AFTERNOON THROUGH SATURDAY NIGHT)
THE MAIN CHALLENGE IS THE THUNDERSTORM COVERAGE AND INTENSITY THIS
EVENING INTO SATURDAY.

FOR THIS EVENING...WARM AND MOIST AIR ADVECTION IS UNDERWAY.  AZO
HEAT INDEX UP TO 106.  THIS HEAT AND HUMIDITY WILL PROVIDE THE FUEL
FOR LATER THUNDERSTORM DEVELOPMENT.  THE STORMS IN IOWA WILL LIKELY
MOVE INTO OR TRACK ACROSS SOUTHERN PARTS OF  LOWER MI THIS EVENING.
DEEP LAYER  SHEAR IS FAVORABLE FOR ORGANIZED CONVECTION. WITH
DAMAGING WINDS THE PRIMARY THREAT.

HEAT INDEX VALUES ARE UP TO 100 TO 105 ALONG INTERSTATE 94.  HOWEVER
ALONG AND NORTH OF INTERSTATE 96 VALUES WERE MUCH LOWER.  THE
POTENTIAL FOR 3 HOURS OF 100 DEG VALUES IS LIMITED SO I CANCELLED
THE NORTHERN PARTS OF THE ADVISORY.

THE NAM HAS SHOWN THE BEST INSTABILITY SOUTH OF JACKSON ON
SATURDAY.  THE GFS STILL HAS MUCH OF SOUTHERN LOWER MI
WITH STRONGER INSTABILITY DURING THE LATE MORNING INTO EARLY
AFTERNOON HOURS.  SO SOME UNCERTAINTY EXISTS WITH THE DEGREE OF
SEVERE POTENTIAL SATURDAY.  WILL MAINTAIN THE HIGHER POPS.

STILL LOOKING DRIER FOR SUNDAY.

&&

.LONG TERM...(316 PM EDT FRI JUL 23 2010)
MONDAY THROUGH FRIDAY)
UPPER TROUGH WILL PUSH A COLD FRONT THROUGH THE REGION WEDNESDAY.
TUE NITE/WED SHOULD BE THE FAVORED TIME FOR TSRA NEXT WEEK. MON/TUE
LOOK DRY WITH SFC HIGH OVERHEAD. EXACTLY HOW FAR SOUTH THE COLD
FRONT PUSHES WILL BE KEY FOR HOW MUCH TSRA ACTIVITY WE SEE. ATTM WE
HAVE VERY LOW CHC POPS FOR THE LATTER PART OF THE WEEK. EVENTUALLY
THE BOUNDARY WILL RETURN NORTH AS LOW PRESSURE DEVELOPS IN THE
PLAINS AND MOVES NORTHEAST. THE LATEST HIRES ECMWF IS SLOWER IN
MOVING THE FRONT BACK NORTH AND INSTEAD SHOWS NNE WINDS THU-FRI. THE
GFS IS A BIT QUICKER. CONFIDENCE ISN/T HIGH THAT WE/LL SEE TSRA
AFTER WEDNESDAY...SO POPS ARE GENERALLY BELOW 30 PERCENT.

&&

.AVIATION...(150 PM EDT FRI JUL 23 2010)
VISIBLE SATELLITE SHOWS CLEARING SKIES MOVING INTO LOWER MICHIGAN.
THIS WILL ALLOW THE ATM TO DESTABILIZE EVEN MORE THAN IT ALREADY IS.
MODERATE CU WAS NOTED IN NRN IL MOVING NE TOWARD THE CWA. WE/LL
WATCH TO SEE IF THESE CELLS DEVELOP INTO STORMS THIS AFTERNOON. A
HIGHER CHC OF STORMS WILL COME TONIGHT AS A SHORT WAVE MOVES TOWARD
THE CWA. CONSERVATIVELY WENT WITH 3-4SM TSRA OVERNIGHT. IT/S
POSSIBLE THAT VSBYS COULD BE LWR BECAUSE THE HEAVY RAIN THREAT IS
PRETTY HIGH.

&&

.MARINE...(400 PM EDT FRI JUL 23 2010)
DIMINISHING WINDS AND WAVES EXPECTED THIS AFTERNOON.  OMR HAD
SEVERAL BEACHES WITH 6 FOOT WAVES...SO MAINTAINED THE SMALL CRAFT
ADVISORY.  EARLIER I UPDATED THE SRF TO REFLECT HIGHER WAVES DOWN IN
THE SOUTHERN ZONES.  WILL ALLOW THE SMALL CRAFT ADVISORY TO EXPIRE
AT 5 PM.

&&

.HYDROLOGY...(400 PM EDT FRI JUL 23 2010)
THE STORMS IN IOWA ARE LIKELY TO CLIP OR MOVE INTO LOWER MI TONIGHT.
ANOTHER ROUND OF STORMS WITH HEAVY RAIN IS POSSIBLE SATURDAY AS THE
FRONT TRACKS THROUGH.  EFFICIENT PRECIPITATION AND TRAINING ARE
POSSIBLE GIVEN THE SLOW/STATIONARY BOUNDARY IN PLACE.  AS MUCH OF
AREA SAW HEAVY RAIN ON THURSDAY...RUNOFF WILL BE MORE EFFICIENT.
THUS MUCH OF THE AREA HAS BEEN PLACED UNDER A FLASH FLOOD WATCH.

&&

.GRR WATCHES/WARNINGS/ADVISORIES...
MI....HEAT ADVISORY SOUTHERN PARTS OF THE CWA TIL 8 PM.
      FLASH FLOOD WATCH INTO SATURDAY AFTERNOON FOR MUCH OF THE
      REGION.
LM....SMALL CRAFT ADVISORY THROUGH THIS AFTERNOON.

&&

SYNOPSIS:     MJS
SHORT TERM:   MJS
LONG TERM:    93
AVIATION:     93
MARINE:       MJS
HYDROLOGY:    MJS

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
1245 PM EDT FRI JUL 23 2010

MIZ037>040-043>046-050>052-056>059-064>067-071>074-240945-
MASON-LAKE-OSCEOLA-CLARE-OCEANA-NEWAYGO-MECOSTA-ISABELLA-MUSKEGON-
MONTCALM-GRATIOT-OTTAWA-KENT-IONIA-CLINTON-ALLEGAN-BARRY-EATON-
INGHAM-VAN BUREN-KALAMAZOO-CALHOUN-JACKSON-
1245 PM EDT FRI JUL 23 2010

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHWEST LOWER
MICHIGAN.

.DAY ONE...TODAY AND TONIGHT

THUNDERSTORMS ARE EXPECTED TODAY INTO TONIGHT. ISOLATED
SEVERE THUNDERSTORMS ARE POSSIBLE THIS AFTERNOON AND THIS EVENING
NEAR AND SOUTH OF INTERSTATE 96. DAMAGING WIND GUSTS WOULD BE THE
PRIMARY CONCERN. AN ISOLATED TORNADO IS POSSIBLE.  AREAS OF HEAVY
RAINFALL MAY LEAD TO URBAN AND SMALL STREAM FLOODING.

HOT AND HUMID WEATHER WILL BE IN PLACE SOUTH OF ROUTE 10 THIS
AFTERNOON. TEMPERATURES SHOULD BE NEAR 90 DEGREES AND DEW POINTS
SHOULD BE IN THE MID 70S...THAT WILL RESULT IN HEAT INDEX VALUES
NEAR 100 DEGREE FOR SEVERAL HOURS. THIS WOULD INCREASE THE RISK OF
HEAT STROKE FOR ANYONE HAVING TO WORK OUTSIDE THIS AFTERNOON.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

THE PASSAGE OF THE COLD FRONT SATURDAY WILL TOUCH OFF
STRONG TO SEVERE STORMS DURING THE DAY SATURDAY. DAMAGING
WINDS AND VERY HEAVY RAINFALL ARE EXPECTED WITH THESE STORMS. AREAS
OF FLOODING OF POOR DRAINAGE IS POSSIBLE.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS POSSIBLE THROUGH SATURDAY.

LMZ844>849-240945-
ST JOSEPH TO SOUTH HAVEN MI-SOUTH HAVEN TO HOLLAND MI-
HOLLAND TO GRAND HAVEN MI-GRAND HAVEN TO WHITEHALL MI-
WHITEHALL TO PENTWATER MI-PENTWATER TO MANISTEE MI-
1245 PM EDT FRI JUL 23 2010

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHWEST LOWER
MICHIGAN.

.DAY ONE...TODAY AND TONIGHT

SOUTHWEST WINDS WILL UP TO 25 KNOTS THIS MORNING INTO EARLY THIS
AFTERNOON WILL SLOWLY BY EVENING. UNTIL THEN WINDS AND WAVES WILL BE
STRONG ENOUGH TO BE A HAZARD TO SMALL WATER CRAFT. AN INCREASED
RISK FOR RIP CURRENTS WILL EXIST TOO. SCATTERED THUNDERSTORMS ARE
EXPECTED TOO.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

THE PASSAGE OF A STRONG COLD FRONT SATURDAY EVENING IS EXPECTED TO
TOUCH OFF STRONG TO SEVERE STORMS WITH GUSTY WINDS AND INCREASED
WAVE HEIGHTS.

STRONG SOUTH WINDS WILL LEAD TO HAZARDOUS CONDITIONS FOR SMALL
WATER CRAFT SATURDAY. WINDS WILL REMAIN STRONG BUT BECOME WESTERLY
SATURDAY NIGHT WITH THE PASSAGE OF A STRONG COLD FRONT DURING THE
EVENING. THE WIND AND WAVES WILL SLOWLY DIMINISH SUNDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS POSSIBLE THROUGH SATURDAY.

WDM

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
1144 AM EDT FRI JUL 23 2010

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1139 AM     HEAVY RAIN       4 NNE KENDALL           42.42N 85.80W
07/23/2010  M3.26 INCH       VAN BUREN          MI   PUBLIC

            24 HOUR RAINFALL TOTAL

&&

KH

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
1254 PM EDT FRI JUL 23 2010

MIZ074-231745-
JACKSON-
1254 PM EDT FRI JUL 23 2010

...SIGNIFICANT WEATHER ADVISORY...

AT 1249 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM EXTREME NORTHEAST
JACKSON COUNTY TO 10 MILES SOUTHWEST OF JACKSON...MOVING EAST AT 30
MPH.

PEA SIZE HAIL...WINDS GREATER THAN 40 MPH...FREQUENT CLOUD TO GROUND
LIGHTNING...BRIEF HEAVY DOWNPOURS...ARE POSSIBLE WITH THESE STORMS.

LOCATIONS IMPACTED INCLUDE...
  HORTON...             VANDERCOOK LAKE...    LEONI...
  LIBERTY TWP...        MICHIGAN CENTER...    GRASS LAKE...
  CLARK LAKE...         NAPOLEON...           BROOKLYN...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

GUSTY WINDS MAY CAUSE SMALL OBJECTS SUCH AS TRASH BINS TO BLOW
AROUND. STAY AWAY FROM HIGH OBJECTS OUTDOORS SUCH AS TREES. SEEK
SHELTER IN A STURDY STRUCTURE UNTIL THESE STORMS HAVE PASSED.

&&

LAT...LON 4207 8413 4217 8472 4243 8414 4242 8413
TIME...MOT...LOC 1653Z 273DEG 25KT 4238 8410 4217 8456

TJT

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
525 PM EDT FRI JUL 23 2010

MIZ066-067-073-074-232230-
CALHOUN-EATON-INGHAM-JACKSON-
525 PM EDT FRI JUL 23 2010

...SIGNIFICANT WEATHER ADVISORY...

AT 520 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
STRONG THUNDERSTORMS STRETCHING FROM KALAMAZOO EAST TO NEAR
JACKSON...MOVING EAST AT 25 MPH.

WINDS GREATER THAN 30 MPH...CONTINUOUS CLOUD TO GROUND LIGHTNING...
BRIEF HEAVY DOWNPOURS...ARE POSSIBLE WITH THIS STORM.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

GUSTY WINDS MAY CAUSE SMALL OBJECTS SUCH AS TRASH BINS TO BLOW
AROUND. STAY AWAY FROM HIGH OBJECTS OUTDOORS SUCH AS TREES. SEEK
SHELTER IN A STURDY STRUCTURE UNTIL THIS STORM HAS PASSED. A SEVERE
THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 100 AM EDT SATURDAY
MORNING FOR SOUTHWESTERN MICHIGAN.

&&

LAT...LON 4245 8415 4220 8415 4226 8491 4244 8490
TIME...MOT...LOC 2123Z 272DEG 28KT 4234 8474

93

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
526 PM EDT FRI JUL 23 2010

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0518 PM     FLOOD            BATTLE CREEK            42.32N 85.19W
07/23/2010                   CALHOUN            MI   EMERGENCY MNGR

            A FEW ROADS IN THE BATTLE CREEK AREA ARE BEGINNING TO
            FLOOD.

0519 PM     FLOOD            3 NW KALAMAZOO          42.31N 85.63W
07/23/2010                   KALAMAZOO          MI   AMATEUR RADIO

            RAVINE ROAD NEAR NICHOLS ROAD BEGINNING TO FLOOD

0519 PM     FLOOD            5 WNW KALAMAZOO         42.32N 85.68W
07/23/2010                   KALAMAZOO          MI   AMATEUR RADIO

            6500 BLOCK OF H AVE BEGINNING TO FLOOD

&&

CSCHOLTEN